As a 07 WR450 owner, I like what Yamaha has done with the 12 model with the exception of the weight. I had an 08 YZ250F that weighed 225 with fuel and the 07 WR450 weighed 277 stock with handguards with same amount of fuel(about 1.5 gal). The weight is very noticeable in every way.
Me and a riding buddy were discussing last year the unlikelyness of the new WR having the YZ450F motor and chassis considering the cost. I love the blue bikes, but still think Yamaha made a bone headed move with their decision to make such drastic changes to the YZ450 that are minimally beneficial. It is also very costly for them to have to make completely different parts from the ground up for the 450 and 250, and dealers have to try and stock all this...
From what I understand the new WR 450 is not exactly "all new". It IS new when compared to the 07-11 models but thats it. It shares the basic frame from the YZ 250F and uses the familiar 5 valve WR motor with the addition of EFI. Not sure if some of the EFI parts are from the quad or not, but they very well may be. The suspension is from the YZ which is a welcome addition over the earlier stuff. It is not the same breakthrough design that the latest YZ was, but this is a different type of bike. I'm sure that if the current YZ chassis/motor design was better for offroad then Yamaha would have went that route. The problem may have been with the starter, battery, airbox and larger fuel tank
working with the YZ design. Who knows? Thats just my thoughts:thumbsup:
I like that Yamaha kept the same basic 5 valve that are known for their dependability. To be honest, with the free mods and a few bolt-ons they are plenty fast for most riders. The weight seems to be everyones biggest gripe but when you add electric start, EFI, lights it adds up. I think I will wait to see how the bike carries its weight.